US 12,281,270 B2
Sustainable turbine and diesel fuels from isoprene and α olefins
Benjamin G. Harvey, Ridgecrest, CA (US); and Calvin Luke Keller, Ridgecrest, CA (US)
Assigned to The United States of America, as represented by the Secretary of the Navy, Washington, DC (US)
Filed by The United States of America, as represented by the Secretary of the Navy, Arlington, VA (US)
Filed on Jun. 6, 2024, as Appl. No. 18/736,352.
Claims priority of provisional application 63/506,513, filed on Jun. 6, 2023.
Prior Publication US 2024/0409833 A1, Dec. 12, 2024
Int. Cl. C10L 1/04 (2006.01)
CPC C10L 1/04 (2013.01) [C10L 2200/0469 (2013.01); C10L 2290/543 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A method for converting isoprene and α-olefins to one or more acyclic hydrocarbon fuels or fuel blendstocks, the method comprising:
providing isoprene and at least one α-olefin, wherein a molar ratio of the isoprene to the at least one α-olefin is from about 1:0.96 to about 1:1;
hydrovinylizing the isoprene and the at least one α-olefin to generate an acyclic hydrocarbon product by heating the isoprene and the at least one α-olefin at a temperature ranging from about 40° C. to about 45° C. in the presence of a first catalyst for about 18 hours to about 24 hours; and
hydrogenating the acyclic hydrocarbon product by heating the acyclic hydrocarbon product at a temperature of about 200° C. in the presence of a second catalyst for about 16 hours under a pressure of hydrogen of about 650 psi,
thereby producing at least one fuel or fuel blendstock having a density of about 0.73 g/ml to about 0.76 g/ml, a gravimetric net heat of combustion from about 43.91 MJ/kg to about 44.05 MJ/kg, and a kinematic viscosity at −20° C. from about 2.4 mm2/s to about 6.3 mm2/s.